20922550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{349}}^1$

素因数の和:481

約数の個数: 48

約数和(自身を含む): 42966000

約数和(自身を除く): 22043450

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 109, 110, 218, 275, 349, 545, 550, 698, 1090, 1199, 1745, 2398, 2725, 3490, 3839, 5450, 5995, 7678, 8725, 11990, 17450, 19195, 29975, 38041, 38390, 59950, 76082, 95975, 190205, 191950, 380410, 418451, 836902, 951025, 1902050, 2092255, 4184510, 10461275, 20922550]

約数ペア:

[(1, 20922550), (2, 10461275), (5, 4184510), (10, 2092255), (11, 1902050), (22, 951025), (25, 836902), (50, 418451), (55, 380410), (109, 191950), (110, 190205), (218, 95975), (275, 76082), (349, 59950), (545, 38390), (550, 38041), (698, 29975), (1090, 19195), (1199, 17450), (1745, 11990), (2398, 8725), (2725, 7678), (3490, 5995), (3839, 5450)]